Recently, I stumbled upon a historically important monograph on a technical subject, which explained complex physical phenomena without a single mathematical equation. I forgot the name of the author, the work, or any other identifying information. Therefore, I ask this question with two goals in mind: first, rediscover the work (some details below); second, find out if there are other similar examples, especially written by people who otherwise have unquestionable mathematical proficiency.
The monograph I read was written between 16th and 19th century, it may have been on a topic related to light (electromagnetic radiation) or optics, and it was quite a voluminous work with maybe 100 pages. For some reason I think the author was someone of the likes of Christiaan Huygens, Thomas Young, or Augustin-Jean Fresnel, but I am not sure if it is any of these three. I also believe he was English, or the work was written in English, but I am not sure about this either.